Gustaf r



(N o Model.) 2 Sheets-SheetV 1.

G. R. SANDELL.

PENCIL SHARPENER. No. 421,767.V Patented Feb. 1&8, 1890.

2 Sheets-Sheet 2.

(No Model.)

G. R. SANDELL. PENCIL SHARPBNER.

Patented Feb. 18, 1890.

w. PETERS. Phemmhegmpmr, wnsningwr D. c.

drawings.

n UNiTnn STATES PATENT OFFICE.-

GUSTAF R. SANDELL, OF BROOKLYN, ASSIGN OR TO THE EAGLE PENCIL COMPANY,OF NEW YORK, N. Y.

PENCl L-SHARPEN ER.

SPECIFICATION forming part of Letters Patent No. 421,767, dated February18, 1890.

Application iilecl November 4, 1889. Serial No. 329.171. (N0 model.)

To all whom t may concern.-

Be it known that I, GUSTAF R. SANDELL, of Brooklyn, in the county ofKings and State of New York, have invented a new and useful Improvementin Pencil-Sharpeners, of which the following is a specification.

The pencil-Sharpener in which my invention is` embodied comprises,essentially, a

knife, knife-carrying tube or knife-carrier,-

and a pencil-holder, the two being placed upon the prolongation one ofthe other, so that a pencil may be insert-ed in the holder to projectinto or through the knife-carrier far enough to bring under the knifethat portion of it which is to be sharpened, and being jointed andswiveled together, s0 that the one may rotate as well' as tiltlengthwise independently of the other. The knife by lwhich the pencil issharpened has a longitudinal movement/with reference to thepencil-holder, for which purpose either it may be mounted in a holderwhich in turn is mounted on and movable lengthwise of the carrier, or itmay be directly attached to the carrier itself or some part iXedthereto, in which event the carrier and pencil-holder, in addition totheir swiveled andV tilting connection, should be capable oflongitudinal movement with reference to each other.

Both plans of carrying my invention into effect are illustrated in theaccompanying Figure 1 is a plan, and Fig. 2 is a side elevation, of aSharpener in which the knife-carrier and the pencil-holder are jointedtogether, so as to be capable ofv both rotating and tilting lengthwiseindependently of each other,

and are combined with a knifeholder mount- Fig. 7 is a plan,

ferentpositions hereinafter explained) of that species of sharpener inwhich the knife is attached to the carrieritself, and the carrier andpencil-holder not only can rotate and tilt lengthwise independently ofeach other, but are also capable of longitudinal movement with referenceto each other. longitudinal central section of a modificationhereinafter more specifically referred to.

Referring now to Figs. l to 6, inclusive, the pencil-holder A is oftubular form, provided at its outer end with split jaws to permit theeasy insertion of the pencil, and with a sliding clamping-ring a, whichmay be slid onto those jaws for the purpose of clamping the insertedpencil in place.

B is the knife-carrier or knife-carrying tube. These two tubes arejointed together end to end by a joint which will permit one to tiltwith reference to the other longitudinally. This joint manifestly can beprovided for in many ways. I/Vhen, as in the present instance, it isdesigned to introduce one end of the pencil-holder a shortdistance intothe knife-carrier, the latter is made of greater diameter internallythan the external diameter of the pencil-holder A, so that when theunsplit end of the latter is inserted in the carrier it may have thenecessary play therein to permit its tilting longitudinally. In anyevent, however, the internal diameter of the Fig. lO is a1 knife-carriershould be sufficiently greater ward portion to protrude through theguide slot s, formed longitudinally in the carrier.

The joint between the knife-carrier and pencil-holderis furnished in thepresent instance by a flexible metal tongue b, which is secured at oneend to a sleeve c, swiveling in the holder A between shoulders or beadsCZ thereon, and at its outer end to the interior of the carrier. In thisway I provide a joint which not only will permit the holder and thecarrier to tilt longitudinally in relation to each other, but will alsoallow-them free rotary movement independently of each other.

The guide-slot s in the carrier B is of at least the length of the taperend to be cut upon the pencil, and is of such width that IOO the pencil,when tilted toward the slot, will protrude therethrough onlysufficientlyV to permit a chip or shaving to be conveniently cut from itby the knife, the slot thus serving to gage the size of chip or shavingto be Cut.

In the forward end of the carrier is a stop e for the end or point ofthe pencil, formed conveniently of a shallow thimble of a size to fit inthe end of the carrier and having the lower half of its bottom removed,so as to provide an outlet for shavings, pencil-dust, dto. The upperhalf of the bottom forms the stop.

The knife-holder C is annular in form, encircling the carrier B andhaving longitudinal lnovement only thereon, which latter result isconveniently secured by providing on the carrier a longitudinal splinef, which engages and enters a groove in the adjoining face of theholder. In bearings gin the holder is set the knife h, with its loweredge fiush and parallel with the slot s. This knife may be soldered orotherwise secured in place. I prefer to make it removable, and for thispurpose combine with it a clamp or tightener consisting of a ring t',placed around the carrier and supported and held in place in an annulargroove on the exterior, in which it can rotate, the outer edge of saidring being just under the projecting outer end of the knife. On thisouter edge of the ring is formed a wedge or cam surface j. By bring ingthis surface under the knife (as can easily be done by rotating thecam-ring by the knob or handle 7s, with which it is provided) the latterwill be clamped and held most firmly in place.

The operation of the device will be readily understood by reference toFigs. 3 and li.

In Fig. 3 the pencil P is wholly unsharpened and is represented in theposition it occupies when the sharpening operation is about to takeplace. The blunt front end of the pencil next to the guide-slot projeets through the slot so far as permitted by the latter and for a smallportion only of the length ultimately to be cut or acted on by theknife. IViththe parts in this position the knii`e-earrier is pushedforward to make the rst cut, and is then drawn back, the pencil isslightly rot-ated, so as to bring another portion of its circumferenceto protrude from the slot, the knife again makes a cut, and so on. Asthe operation proceeds more and more of the length of the pencil is cutaway and more and more tilt is permitted to the holder until when thepencil is fully sharpened the parts will occupy the position shown inFig. fl. It will be noticed that really but little strain is put uponthe holder or upon the joint between the holder and carrier during thisoperation, the pencil itself bearing at its top against the carrierunder the slot s at all times during the sharpening operation.

In the Sharpener shown in Figs. 7 to 9, inclusive, letters of referencecorresponding to those which appear in Figs. l to G' indicatecorresponding parts. In this species of sharpener the knife, instead ofbeing attached to a slide or holder movable lengthwise of the carrier,is attached fixedly to the carrier itself. For this reason the carrierand pencilholder, in addition to their capacity for rot-ating andtilting lengthwise independently of one another, are also capable ofsliding bodily lengthwise relatively to each other. The joint for thispurpose is furnished by an intermediate sleeve Z, which iits closely inand can slide lengthwise of the carrier A, the extent of its retractionor rearward movement being limited by a knurl or internal bead m at therear of the carrier. The pencil-holder at its front end iits in thissleeve with suiiicient looseness to permit it to tilt lengthwise to theneeded extent, and is held in place by an external knurl or bead 'a onit, which is contained between two internal knurls or beads 0 on thesleeve. Thus the holder can not only tilt and rotate, but also slidelongitudinally independently of the knife-carrier. I arrange the knife hso that its inclined .front end shall overhang and project somewhatbeyond the carrier A, as seen, a portion of the carrier-tube at thispoint being preferably extended beneath the knife, as seen at h, to forma rest and gage for the pencil. I prefer in this arrangement (for thepurpose of making the knife readily removable) to provide it with a ilatshank h', provided at the rear with a bent-over portion or tongne h2,which enters the external groove on in the carrier, the knife beingclamped in this position by a clamping-ring fr, which surrounds thecarrier and embraces the shank of the knife, as shown in the drawings.rIhe operation of this form of Sharpener will be readily understood fromthe foregoing explanation in connection with Figs. 8 and 9, in which theparts are shown, in connection with a pencil, in the position which theyassume at the two extremes of longitudinal movementfof the pencil-holderwith reference to the knife-carrier. In this arrangement the knife,owing to its shank h', has a certain capacity for yield. By bearing withthe thumb or fingers upon the shank with more or less pressure theaction of the knife upon the pencil will be correspondingly modified.The carrier A might, if made of sufficient length, be provided with aslot similar to the slot s of the Sharpener illustrated in Figs. I to G,and such a modification is illustrated in Fig. 10, in which thc ring orholder C is ixed on the knife-carrier, the latter is prolonged to therear of the said holder sufiiciently to afford the needed snpport forthe pencil-holder during its longitudinal movement, and thepencil-holder is united to the carrier by a sleeve Z in a similar mannerto that described with reference to Figs. G to 9, the sleeve playinglengthwise in this elongated portion of the carrier.

Having now described my invention and the manner in which the same is ormay be carried into effect, what I claim, as new, and

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desire to secure by Letters Patent, is as follows: H

l. In a pencil-Sharpener, the combination, with the knife carrier, of apencilholder jointed thereto, so that it may both rotate and tiltlengthwise independently of said carrier, substantially as and for thepurposes set forth. Y

2. In a pencil-Sharpener, the combination, with the knife-carrier, of apencil-holder movable longitudinally relatively tothe carrier andjointed thereto, so that it may both rotate and tilt lengthwiseindependently7 of said carrier, substantially as and for the purposeshereinbefore set forth.

3. The combination of the knife-carrying tube, the knife attachedthereto, the pencilholder, and the intermediate slidingconnecting-sleeve Z, substantially v.as and for the purposeshereinbefore set forth.

4. The knife-carryin g tube, the knife placed thereon and provided witha shank having a tongue which enters a groove or depression m in theknife-carrying tube, and the clamp# ing-sleevef, in eombination'with thelongitudinally-movable swiveled and tilting pencil-holder, substantiallyas and for the purpose hereinbefore set forth.

In testimony whereof I have hereunto set' my hand this 1st day ofNovember, 1889.

. GUSTAF R. SANDELL.

Witnesses:

SAMUEL KRANS, G. S. BRAIsTED.

